{
  "pools": {
    "foo": {
      "servers": [ "127.0.0.1:5000" ]
    },
    "baz": {
      "servers": [ "127.0.0.1:5001" ]
    }
  },
  "route": {
    "type": "McRefillRoute",
    "primary": "PoolRoute|foo",
    "refill": "PoolRoute|baz"
  }
}
